Describes the cause and action for error messages.
Error Message(English)：
if cell does not contain then
Excel formula: If NOT this or that | Exceljet
https://exceljet.net/formula/if-not-this-or-that
How to count if cell does not contain text in Excel? - ExtendOffice
https://www.extendoffice.com/documents/excel/2504-excel-countif-does-not-contain.html
Excel: If cell contains formula examples - Ablebits.com
https://www.ablebits.com/office-addins-blog/2017/10/18/excel-if-cell-contains-formulas/
Excel formula: If cell contains substring "this" AND does not ...
https://stackoverflow.com/questions/40498040/excel-formula-if-cell-contains-substring-this-and-does-・・・
Excel Formula: Count cells where value is date
https://stackoverflow.com/questions/15249662/excel-formula-count-cells-where-value-is-date
Excel VBA If Statement to Find Cells That Contain ...
https://stackoverflow.com/questions/43161728/excel-vba-if-statement-to-find-cells-that-contain-a-str・・・
Using "If cell contains #N/A" as a formula condition.
https://stackoverflow.com/questions/20962940/using-if-cell-contains-n-a-as-a-formula-condition
Check whether a cell contains a substring
https://stackoverflow.com/questions/18617175/check-whether-a-cell-contains-a-substring
Contains Specific Text - Easy Excel Tutorial
https://www.excel-easy.com/examples/contains-specific-text.html